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Andrii L. Status: Offline
Kharkiv, Ukraine
100% Job Success
Top Rated Plus

Full-stack Developer | JavaScript | Vue.js | Node.js | PHP | Laravel

I am a full-stack developer with 9+ years of experience in the IT industry. My career started with e-commerce projects, mostly with CMS platforms such as OpenCart and WordPress. Over the years I have expanded my expertise to include modern frontend technologies, consistently delivering high quality projects using Vue, React, Quasar and Cordova.🚀 I am proficient in HTML, CSS, and JavaScript and am able to use tools such as Webpack, Sass, and Gulp to optimize and streamline development workflows. I am also proficient in version control using Git, and I am also well-versed in project management and bug tracking systems such as Jira and Trello. 💪My technical skill set includes: ➜ JavaScript and Node.js: 8+ years of experience in creating efficient and scalable code. ➜ PHP/Laravel: Strong experience developing robust server-side applications. ➜ Front-End Frameworks: Knowledge of Vue.js, Vuex, Nuxt, Vuetify, Cordova, and Quasar. ➜ HTML5/CSS3: Advanced knowledge of web standards including pre- and post-processors and Flexbox layout techniques. ➜ Internal frameworks: Knowledge of Nest.js, Express.js, and AdonisJS. ➜ API development and integration: Extensive experience in API creation and integration. ➜ Development Tools: Skilled in using Slack, Jira, Trello, Git, Docker, and Figma for effective project management and collaboration. ➜ Experience with AI, with its integration of implementations and beyond. 📌In my professional journey, I have consistently demonstrated the ability to write clean, maintainable, and scalable code that adheres to best practices. I have a good understanding of problems, the ability to troubleshoot and debug complex software systems, and work well in a team environment with effective communication skills. 🏆 Our experience in full-featured development: ✔️ 10+ years of experience in web and mobile development ✔️ 250+ projects for startups, SaaS platforms E-commerce + Marketplace, Booking Platforms, MVPs, AI chatbots / AI solutions ✔️ 22,574+ hours worked on Upwork ✔️ 42+ countries we operate in providing top-notch web development solutions ✔️ AI & automation ready - experience with AI chatbots, OpenAI integrations, and content automation ✔️ From idea to launch - UI/UX design, frontend & backend development, QA, and post-launch support ✔️ Flexible and client-focused - personalized approach, clear communication, and full dedication to results 📌 Full-Stack Web & SaaS Development Expertise 🔹 10+ years of hands-on experience in building scalable web & mobile applications 🔹 250+ completed projects - from MVP to production-ready SaaS platforms 🔹 Full product cycle: from idea validation and prototyping to launch and post-release support 🔹 Modern stack: Vue \ Nuxt, React \ Next.js, Node.js, JavaScript TypeScript, NestJS, Noda.js PostgreSQL, MongoDB, AWS, Supabase & more 🔹 AI Integration: OpenAI, LangChain, chatbot development, prompt engineering, GPT-based tools 🔹 Marketplace, E-commerce, Booking Platforms - tailored logic, secure payments, real-time updates 🔹 API Integrations: Stripe, Slack, Twilio, OpenAI, CRM systems, social media API 🔹 Efficient & secure architectures -clean code, modular structure, role-based access, scalable backend 📌Full-Stack Development AI & Chatbot Development Expertise 🔸 Extensive experience in building AI-powered solutions, including custom GPT-based chatbots, document analysis tools, and intelligent automation systems 🔸 Integration with OpenAI API (GPT-3.5/4) for chatbot creation, semantic search, text summarization, language translation, and prompt-driven workflows 🔸 LangChain & Prompt Engineering – building multi-step, context-aware interactions for advanced conversational agents 🔸 Real-world use cases: Legal & medical document parsing, customer support bots, smart assistants for booking/e-commerce platforms 🔸 Secure & scalable architecture – including role-based access control, user session management, and protected endpoints for AI services 🔸 Hybrid solutions – AI integrated into full-stack applications (React/Vue + Node.js/NestJS) with real-time data flow and third-party APIs (Twilio, Slack, Stripe, CRM systems) 🔸 Cloud-ready & optimized – deployed via AWS, Vercel, Supabase, with performance monitoring and cost-effective API usage strategies 🔸 100% rapid prototyping to production – from PoC to polished tools with clean UI/UX and user-centric flow 🔸 Continuous collaboration with product teams to refine AI logic and ensure high relevance and response quality 📌 Full-Stack Developer | E-commerce & Marketplace Solutions 🔹 50+ custom online stores & marketplaces - from MVP to scalable production 🔹 Multi-vendor systems - seller portals, admin dashboards, commission logic 🔹 Secure payments - Stripe, PayPal, Apple/Google Pay, Stripe Connect (split & escrow) 🔹 Smart catalogs - filters, variations, inventory tracking, real-time updates 🔹 Advanced search, reviews, messaging, promo logic & analytics
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Get started working with Andrii quickly with these predefined projects.

Get started working with Andrii quickly with these predefined projects.

You will get advice Full-Stack Developer in AI solutions | AI integration | AI chatbot

From $10,000
2 days delivery

You will get Full-stack Developer | JavaScript | Vue.js | Node.js | PHP | Laravel

From $10,000
5 days delivery

You will get Full-stack Developer | JavaScript | Vue.js | Node.js | PHP | Laravel

From $10,000
7 days delivery

You will get MVP development on your terms | Minimum viable product | MVP solutions

From $15,000
50 days delivery

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